I have used your calculator now, and it seems it doesn't recognise a comma?If I key in a comma (german), it says invalid character. If I key in a dot (english comma), it just ignores it! What do I do wrong?

Hi niki,Metalogic Calculator does not currently recognize the local decimal separator. It always uses a decimal point (.) regardless of whether your locale uses a comma (,) or some other symbol. I've added this to the list to be improved.